Windows 7 machine can't see 802.11n network

(I actually have a Time Capsule but since this is a wi-fi question I'm posting it here.)
I have a Dell running Windows 7 (32-bit) that has a wireless dongle. The dongle is supposed to be 802.11n.
However, that computer never connects using n, it only connects at g.
I tried creating separate 2.4GHz and 5GHz networks on the Time Capsule, and the Dell DOES NOT EVEN SEE the 5GHz network. I can stand with a Macbook in the exact same location as the Dell and get a strong 5GHz signal.
Any clues?

My guess is that Win7 "recognized" the device as a Realtek and substituted the Realtek drivers for it. Did your Zonet come with an installation CD ... or provides a web support site? If either, I would strongly suggest, that you use their drivers instead ... and this is a good reason you're only getting access with the 802.11g mode.

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Just registered to say, on an Alienware M17x system as well running Windows 7 Ultimate, here is a link to a solution that worked exactly for me:
http://forum.notebookreview.com/alienware/436486-guide-properly-solve-wireless-connection-problems-m17x.html
All I did was section I.a. If the link is down, I copied the only section that I needed to follow out of this guide, in order to get my wireless to work repeatedly without having to uninstall the wireless driver every single reboot. Now it works perfectly,
already connected to a wireless network on startup.
I.a. Disable Device sleep on disconnect
Some newer Nvidia Ethernet drivers have a feature called Device sleep on disconnect. This is the culprit. Normally, it should only put the Ethernet adapter to sleep when the cable is disconnected, but it's buggy and thus kills the wireless connection as
well.
Follow these steps to disable this feature on your Nvidia Ethernet Adapter:
1. Open the Windows Device Manager by hitting Win+Pause, then click on Device Manager on the left side.
2. Double-click on Network adapters.
3. Double-click on NVIDIA nForce Networking Controller (yes, that's the wired Ethernet adapter indeed).
4. Click on the Advanced tab.
5. Select Device sleep on disconnect.
6. Set the Value to Disabled.
7. Click OK and wireless should work again (might require a reboot afterwards, but probably not).

My MBP doesn't connect to 802.11n networks

Software Versions:
Menu Extra: 6.2 (620.24)
configd plug-in: 6.2 (620.15.1)
System Profiler: 6.0 (600.9)
Network Preference: 6.2 (620.24)
AirPort Utility: 5.4.2 (542.23)
IO80211 Family: 3.1 (310.6)
Interfaces:
en1:
Card Type: AirPort Extreme
Firmware Version: Atheros 5416: 2.0.19.8
Locale: Korea
Country Code: KR
Supported PHY Modes: 802.11 a/b/g
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 149, 153, 157, 161
Status: Connected
Current Network Information:
SSD87:
PHY Mode: 802.11g
BSSID: 0:25:bc:8a:3f:51
Channel: 11
Network Type: Infrastructure
Security: WPA2 Personal
Signal / Noise: -58 dBm / -96 dBm
Transmit Rate: 54
Other Local Wireless Networks:
SSD875G:
PHY Mode: 802.11n
BSSID: 0:25:bc:8a:3f:52
Channel: 157
Network Type: Infrastructure
Security: WPA2 Personal
Signal / Noise: -55 dBm / -96 dBm
SSD875G:
PHY Mode: 802.11n
BSSID: 0:1f:5b:86:e9:74
Channel: 157
Network Type: Infrastructure
Security: WPA2 Personal
Signal / Noise: -58 dBm / -96 dBm
==============================================
From the information above, my MBP doesn't access 802.11n network after install Mac OS X 10.6 Snow Leopard and all of updates.
Snow Leopard changes Phy mode of 'Atheros 802.11n WL card' to 802.11g, and It works fine as 11n under 10.5.8 Leopard.
What makes this situation?
Message was edited by: xeon.thebrick

defecta wrote:
So by the virtue of my MacBook being compliant with the 802.11d standard I am open to these issues? And from the way you are explaining it it sounds like Apple is ahead of the curve with implementing 802.11d compliance?
They're not ahead of the curve +per se+, but as an example many Windows XP machines are behind the curve if you will.
Would it be legal to write an app or driver that you can set ignore certain problem country codes when you want it to? Because something like this would help my issue also rather than playing lotto each time I turn my MacBook on or wake it from sleep, hoping it will see my wireless network first.
Unfortunately, I'm not a lawyer and not in Australia so I couldn't begin to guess at what is legal and what's not in this arena.
However, there is no interface to the driver to be able to manually set a country code, so the point may be moot.
I don't know what kisMAC can and cannot display, but the country code is broadcast within the 802.11 beacon frame and/or probe response frame if the frame's dot11MultiDomainCapabilityEnabled option is true, so you may want to try looking at its output of beacon frames.
Three octets make up the country code - the two character country code and a third octet which is one of:
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    * An ASCII ‘O’ character (0x4F) if the regulations under which the 802.11 station is operating are for an outdoor environment only.
    * An ASCII ‘I’ character (0x49) if the regulations under which the 802.11 station is operating are for an indoor environment only.
The way the 802.11d standard specifies this all works is:
9.9.1 Operation upon entering a regulatory domain
A STA that is enabled for operation across regulatory domains shall default to passive scanning when it has lost connectivity with its ESS. Passive scanning is performed using only the receive capabilities of the station and is, thus, compatible with regulatory requirements. The timeout for determining the loss of connectivity is system dependent and beyond the scope of this standard.
When a STA enters a regulatory domain, it shall passively scan to learn at least one valid channel, i.e., a channel upon which it detects IEEE Std 802.11 frames. The Beacon frame contains information on the country code, the maximum allowable transmit power, and the channels to be used for the regulatory domain. Optionally, the Beacon frame may also include, on a periodic basis, the regulatory information that would be returned in a Probe Response frame. Once the STA has acquired the information so that it is able to meet the transmit requirements of the regulatory domain, it shall transmit a Probe Request to an AP to gain the additional regulatory domain information contained in the Probe Response frame, unless the information was previously received in a Beacon fame. The STA then has sufficient information available to configure its PHY for operation in the regulatory domain.
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=946610&userType=inst
Note that this spec dates to 2001, so it's hardly something "new," just something that wasn't necessarily widely supported.

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Last edited by Daenyth (2012-08-08 19:35:17)

Gusar wrote:
.:B:. wrote:You're reading things that are not there mate. 802.11n is both a 5 GHz and a 2,4 GHz standard. The old IPW 2200 only does 802.11bg. Had one myself.
I know that. Are you saying the new 2200 only does N at 2.4GHz?
Oh, and I not only had an IPW 2200, I still have it! . Actually, I have an IPW 2915, which also does 802.11a in addition to 802.11bg. It uses the same ipw2200 driver though.
Edit: Did a bit of googling, the new 2200 indeed only does N at 2.4GHz. Let me just say that this is totally and completely insane. It's so insane I couldn't imagine such a thing could even exist.
It's a billion dollar company. What do you expect? I found out yesterday Microsoft actually has a 16 GB memory limit on Windows 7 Home Premium. You need a Pro version to use more. There I was, telling my friend to get 32 GB for his video editing rig.
As for daenyth's card, convention has it that bgn is 2,4 GHz only. An a(b)gn card can do both 2,4 GHz and 5 GHz. You don't need to check specs for that. It's sad indeed, but there are still plenty 2,4 GHz-only 802.11n cards around. This new laptop I got a few months back came with one, and that wasn't a 300 EUR netbook.
Last edited by .:B:. (2012-08-09 11:48:55)

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